Coupling



March 24, 1931. E. F. p11-:RCE 1,797,363

` COUPLING Original Filed Aug. 6, 1923 `Patented Mar. 24, 1931 UNVITEDSTATES nam. r. Pinnen,

PATENT 'v oFFlcEf OF WINNETKA, ILLINOIS, ASSIGNOR TO ALEMITECORPORATION, F CHICAGO, ILLINOIS, A CORPORATION 0F DELAWARE COUPLINGriginal application tiled August l6,1923, Serial No. 655,919. DividedandV this application led March 29,

. 1926.v Serial'fNmv 98,199.

My invention relates to im rovements in couplings, and Vis particular yconcerned, though notnecessarily limited to improvements in couplingsforming parts of lubri- Qcatmgs stems.

The o jects of myinvention area.

First, to provide a coupling comprising a fitting, or element, adaptedto be secured to a bearing, or connected with a source of fluid 1Q underpressure, and a co-acting coupling member that may either conductlubricant to, or receive lubricant from the fitting, or that may be usedfor conducting any other de`` sired fiuid.

Second, to Provide a construction such as described, in which one of thecoupling members is provided with a valve that is normally subjected tothe .pressure ofthe fiuid conducted when the valve is in its closedposition, andthe other coupling member is providedwith means for openingsaid valve to permit the passage of iiuid from the valve` couplingmemberto the other coupling member.

.- Third, to provide aV coupling such as described, .comprising means orsealing the connection between thetwocoupling mem bers before the valveinthe one coupling member is opened; and

Fourth, to provide a coupling such as de;

scribed,.that is-simple in construction, economical to manufacture andeasy to operate..

Other objects of my invention will appear as this description proceeds,reference being A had to the accompanying drawingskin which Figure 1 isa side elevation of my improvedlcoupling; and

Figure 2 is a central longitudinal section therethrough on line 2--2 ofvFigure 1. The embodiment of my invention disclosed herein comprises acylindrical fitting 5, one end of which is screw threaded at 6 to enableVit to be connected with a bearin or any other conduit. The inner end oft is ittlng, or

v coupling member, is viianged inwardly as shown at 7 to provide theopening 8, and a valve seat for the valve comprising the metal disc 9and the leather disc 10. These two discs are yieldingly urged toward theouter end of the fitting by means of the compression spring 11, one endof which engages the inner face of the metal disc 9, and the other endof which rests luponthe cross pin 12 extending through and beyond thesldes of the fitting. 55 The other coupling member of myV improvedcoupling comprises a swivel member 13 that maybe suitably connected witha exible conduit 14, or any. other type of conduit. The swivel element13 comprises an annular iiange 15 that is clamped between one end of thesleeve 16 and the inturned ange 17 of the sleeve 18. The two sleeves 16and 18 are threaded together as shown at 19.` It will, of course, beunderstood that e5 the contact between the annular flange 15 and theadjacentportions of the sleeve 16 and the iange 17 is not ti ht enoughbutv what the sleeve 16 can be rea il'y turned upon the swivel element13. n

The outer end of the sleeve 16v is provided withv a pair of oppositelydisposed bayonet slots 20, only one of which is shown for receiving theends of the pin 12, and thus establishing a mechanical connectionbetween the two coupling members.

A disc 21 rests against a shoulder 22 formed in the bore of the sleeve16 and has integrally formed therewith the outwardly g extending tube23. The outer end of the tube. is tapered, as shown atr 24, so as topermit it freely to enter the opening 8 in the end of the fitting 5 anddislodge the valve, as shown in Figure 2. In order to permit freepassage of iiuid through the coupling, the outer end of the tube isslotted, asshown at 25.

The annular cup-leather, or gasket 26 surrounds the tube 23 and normallyheld against the shoulder 27 by means` of a com'-v pression spring28,.the opposite'end of which engages the'A outer face of thedisc 21.Preferably, a metallic washer 27 is interposed' between the outer end ofthe spring 28 and the bottom of the cup-leather 26.

For the purpose pf maintaining a sealed joint between the swivel member13 andthe sleeve 16, I provide a cup-leather, or gasket,n

` 29,v in the bottom of which is the washer 30.

sealing relation with the swivel element 13 and the sleeve 16.

In making a connection between the fitting, or coupling member, 5 andthe other coupling member of my invention, the bayonet slots 20 arepositioned so as to receive the ends of the pin 12, and the outercoupling member is then turned to bring the cross pin 12 in the positionshown in Figure 1.. Initially and before the outer end of the tube 23contacts with the valve in the fittin the outer face of the gasket 26contacts wit the outer face of the end of the fitting and estab-v lishesa sealed connection under the tension of the spring 28. As the slee-ve16is turned, this sleeve slips down over the fitting 5 thereby increasingthe tension 'of the spring 28 and the seal between the gasket 26 and theSubsequently to the establishmentfitting. of the seal between these twoelements, the end of the tube 23 engages the leather disc 10 and furthermovement of the coupling member 16 relatively to the tting causes theend of the tube 23 to push the-valve to the open position shown inFigure 2. The cup leather 26 and its washer 27 fit 'loosely' .around thetube 23, so that lubricant can have access to the space in the rear ofthe cup leather, and inasmuch as 'the lubricant is under pressure, itwill tend to press the cup leather 26 even more tightly against the endof the nipple thereby effectively preventing anyleakage of lubricant.

While the coupling `described above is adapted to permit How of liquidthrough it in either direction, it is particularly suited for use whenit is desired to transfer fluid from the fitting to the conduit 14.

This application isa division of my copending vpplication, Serial No.655,919, filed August 6, 1923.

'While I havedescribed the details of the preferred embodiment of. myinvention, it is to be clearly understood that my invention is notlimited to these details, but is capable of other adaptations andmodications within the scope of the appended claims.

Having thus described my invention, what I claim is:

1. A coupling comprising one coupling member and asecond coupling membercomiameters, an element member prior to the opening of said valve bysaid tubular portion. Y

2. A coupling comprising one coupling member having an inwardlyopeningvalve seating against the outer end thereof, a second coupling membercomprising a sleeve forreceiving said iirst-named coupling member, adisc in said sleeve having an outwardly extending open-ended tube formedintegrally therewith, the outer end of saidtube being positioned to openthe valve lin said firstnamed coupling member when said coupling membersare coupled together, and an annular gasket loosely surrounding saidtube and providing a passageway around said tube for allowing fluidpressure to pass to the rear of said gasket for sealing the connection.between said coupling members, said gasket bes ing bodily movablerelative to said tube.

3. A coupling comprising one coupling member and a second couplingmember comprising a sleeve for receiving said first# named couplingmember, a tube in said sleeve having an outer open end, an annulargasket surrounding said tube, and a passageway around said tubecommunicating with the rear of said gasket, said gasket beingmovable'relative to said sleeve.

4. A coupling comprising one coupling member and a second couplingImember comprising an open-ended tube, theouter end of said tube beingin communication with said first-named coupling member when saidcouplingmembers .are coupler together, an annular gasket looselysurrounding said tube, and a passageway around'said tube communicatingasket eingbodily movable relative to said sleeve and saidtube.

5. A couplin including a male couplingl member and a emale couplingmember, said female coupling member comprising. a sleeve having aninternal bore, a disc portion positioned in said bore and having adownwardly projecting nozzle, a valve in said male cou-- with the rearof said gasket, said l pling member adapted to be opened by said Knozzle, a flexible cup washer loosely surrounding said nozzle adapted topermit fluid to pass to the rear thereof to force said washer a ainstboth the upper end of said male coup ing member and also against theinner wall of saidfemade member, and a spring for forcing said washeragainst said male coupling member to lform a seal prior to the openingof the said valve by said nozzle.

6. A coupling including one 'coupling member and a second couplingmember comprising a sleeve .having a bore of stepped successivelyincreasing diameters, an element comprising 'a disc' ortion. resting onone of the steps in said s eeve, and a down- Vvwardly projectingtubularportion formed therewith, a valve in said first-named couplingmember'adapted to be opened by said tubular portion upon a couplingoperation,

a fiexible washer and a passageway around said tubular portioncommunicating with the rear of said Washer adapted to a11oW- the same tobe subjected to the pressure of l fluid passing through the coupling toseal the connection there-between.

In witness whereof, I hereunto subscribe my name this 26th day of March,1926.

v EARL F. PIERCE.

